We have a 2kW 8 panel solar array (Panasonic HIT panels), mounted on a south-facing roof at approximately 35-40° angle from the horizontal, which were installed at the end of August 2013.
This is the results for March 2015 (in red) with last year's results (green), and distribution by average sunlight 1971-2010 (met office stats) in blue:
The panels have done 176.30kWh this month, down 6.69kWh on last year.
With 351 hours of daylight in March (sun up to sun down for all 31 days), the average kWh generated per hour of daylight this month was 0.52kW.
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